Rewind: Logical arguments must be valid and sound

Andrew Rappaport's Rapp Report Daily

Subscribe

Download

Share

00

00:00

Hey Scott, what brings you in at the pharmacy? I'm thinking about getting one of the updated COVID -19 vaccines.

00:06

Great. Do you know which type of vaccine you'd like? There's more than one? Yep, there are different types of vaccines available.

00:14

You can learn more about them at wedovaccines .com. If you have questions or want to make an appointment, give me a call.

00:21

What was that website again? Wedovaccines .com Thanks, I'll check it out. This message was brought to you by Novavax.

00:30

We're all looking for ways to reduce energy usage and keep our homes comfortable this season and every season.

00:37

One way is to take advantage of incentives on high -efficiency natural gas heating equipment from National Grid.

00:43

If your equipment is getting older, think about making the switch to a newer model, because saving energy means saving money.

00:49

Exclusive incentives up to $2 ,000 are available now for energy -saving furnaces, boilers, and more.

00:55

Learn more at ngrid .com. The Rapid Pull, daily edition, where we provide a quick biblical interpretations and applications.

01:12

This is a ministry of striving for eternity. When we talk about logic or critical thinking, we talk in terms of validity and soundness.

01:22

A logical argument is valid when the argument form is valid.

01:30

Now, this is different from soundness. An argument is sound if and only if it is valid and all its premises are true.

01:42

So, you can make a logical argument that's valid by saying that when it rains, the ground is wet.

01:50

The ground is wet, therefore it rained. Now, that is valid. The premise that the ground is wet when it rains, the support, the ground is wet, therefore the conclusion that it must have rained.

02:07

That's logically valid, but guess what? It's not sound. It's not sound because there is a third option.

02:15

The sprinklers. That's right. The ground could be wet by something else and not just from the rain.

02:23

So, though the argument form is valid, it's not sound.

02:29

And it's not sound because one of the premises is not true.

02:36

The fact that the ground is wet doesn't mean that it can only be from rain.

02:42

So, whenever you're talking to someone and they're discussing logical things, you want to do critical thinking, always look for whether the argument is valid and sound.

02:52

This podcast is part of the Striving for Eternity ministry. For more content or to request a speaker or seminar to your church, go to strivingforeternity .org.

03:00

You know that education changes lives, but did you know you can get a degree at Cambridge College while you work full -time?

03:07

It's because their programs are designed for busy adults with flexible schedules, 24 -7 support, and affordable tuition.

03:14

Plus, at Cambridge College, you can go at your own pace, which is helpful because, you know, life.

03:19

Whether you're considering a degree or certificate, you owe it to yourself to check out Cambridge College.

03:25

Ready to change your future? Get started today at cambridgecollege .edu. With Luckyland Sluts, you can get lucky just about anywhere.

03:35

This is your captain speaking. We've got clear runway and the weather's fine, but we're just going to circle up here a while and get lucky.

03:41

No, no, nothing like that. It's just these cash prizes add up quick. So I suggest you sit back, keep your tray table upright, and start getting lucky.

03:50

Play for free at luckylandsluts .com. Are you feeling lucky? No purchase necessary.